import logging

from data import model
from oauth.loginmanager import OAuthLoginManager
from oauth.oidc import PublicKeyLoadException
from util.security.jwtutil import InvalidTokenError


logger = logging.getLogger(__name__)

class AppTokenInternalAuth(object):
  """ Forces all internal credential login to go through an app token, by disabling all other
      access.
  """
  @property
  def supports_fresh_login(self):
    # Since there is no password.
    return False

  @property
  def federated_service(self):
    return None

  @property
  def requires_distinct_cli_password(self):
    # Since there is no supported "password".
    return False

  def has_password_set(self, username):
    # Since there is no supported "password".
    return False

  @property
  def supports_encrypted_credentials(self):
    # Since there is no supported "password".
    return False

  def verify_credentials(self, username_or_email, id_token):
    return (None, 'An application specific token is required to login')

  def verify_and_link_user(self, username_or_email, password):
    return self.verify_credentials(username_or_email, password)

  def confirm_existing_user(self, username, password):
    return self.verify_credentials(username, password)

  def link_user(self, username_or_email):
    return (None, 'Unsupported for this authentication system')

  def get_and_link_federated_user_info(self, user_info):
    return (None, 'Unsupported for this authentication system')

  def query_users(self, query, limit):
    return (None, '', '')

  def check_group_lookup_args(self, group_lookup_args):
    return (False, 'Not supported')

  def iterate_group_members(self, group_lookup_args, page_size=None, disable_pagination=False):
    return (None, 'Not supported')

  def service_metadata(self):
    return {}

  def ping(self):
    """ Always assumed to be working. If the DB is broken, other checks will handle it. """
    return (True, None)